Re: about micro power design
Hi paulux,
Yes we had to fine tune it. But 50% increase in current was quite a setback.
I tried it in 2 different foundry and different techonology. And observed the same in both case. We are still trying to debug the issue. One was simulated in Spectre and other in HSPICE.
The papers we have read, do mention that weak inversion requires a good reference current.
Do you know of any material that talks on opamp design in weak inversion and also telling how input swing, output swing and other parameters could be predicted.